34304821 has 2 divisors, whose sum is σ = 34304822. Its totient is φ = 34304820.

The previous prime is 34304819. The next prime is 34304843. The reversal of 34304821 is 12840343.

34304821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30404196 + 3900625 = 5514^2 + 1975^2 .

It is an emirp because it is prime and its reverse (12840343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34304821 - 2¹ = 34304819 is a prime.

Together with 34304819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34308821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17152410 + 17152411.

It is an arithmetic number, because the mean of its divisors is an integer number (17152411).

Almost surely, 2^34304821 is an apocalyptic number.

It is an amenable number.

34304821 is a deficient number, since it is larger than the sum of its proper divisors (1).

34304821 is an equidigital number, since it uses as much as digits as its factorization.

34304821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 34304821 is about 5857.0317567860. The cubic root of 34304821 is about 324.9264401566.

The spelling of 34304821 in words is "thirty-four million, three hundred four thousand, eight hundred twenty-one".